Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of WEDNESDAY: FEBRUARY 1 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.7 10.8 145 23.5 14.1 167 Black Bear 8170 22.7 23.3 97 31.8 25.1 127 Blind Bull Sum 8650 22.6 13.8 164 -M 12.9 * Cottonwood Creek 7670 16.4 12.9 127 22.7 15.9 143 East Rim Divide 7930 11.2 6.8 165 13.4 7.7 174 Grand Targhee 9260 28.3 23.6 120 26.5 20.7 128 Granite Creek 6770 16.1 10.6 152 21.0 13.7 153 Grassy Lake 7265 23.8 20.3 117 35.2 24.1 146 Gros Ventre Summit 8750 9.7 8.4 115 14.1 8.3 170 Gunsight Pass 9820 10.5 8.3 127 14.5 8.9 163 Lewis Lake Divide 7850 20.3 20.0 102 31.9 23.3 137 Phillips Bench 8200 18.8 16.0 118 28.5 18.3 156 Salt River Summit 7760 12.5 7.8 160 17.9 10.7 167 Snake River Station 6920 14.3 10.9 131 23.3 15.6 149 Spring Creek Divide 9000 20.7 14.4 144 23.2 15.4 151 Thumb Divide 7980 10.6 9.6 110 15.9 12.2 130 Togwotee Pass 9580 18.5 15.0 123 22.3 15.9 140 Two Ocean Plateau 9240 24.1 17.6 137 24.3 17.4 140 Willow Creek 8380 20.0 17.1 117 31.1 21.7 143 Younts Peak 8350 12.9 9.6 134 17.0 10.5 162 ----- ----- Basin Index (%) 126 146 MADISON-GALLATIN Black Bear 8170 22.7 23.3 97 31.8 25.1 127 Canyon 7870 10.0 8.2 122 16.2 10.8 150 Madison Plateau 7750 13.9 14.1 99 22.9 17.4 132 West Yellowstone 6700 7.9 7.0 113 15.3 9.7 158 Whiskey Creek 6800 9.0 9.6 94 16.8 13.3 126 ----- ----- Basin Index (%) 102 135 YELLOWSTONE Beartooth Lake 9360 16.7 13.9 120 12.9 12.9 100 Burnt Mtn 5880 5.0 2.4 208 9.1 7.8 117 Canyon 7870 10.0 8.2 122 16.2 10.8 150 Cole Creek 7850 6.4 8.4 76 5.0 7.6 66 Evening Star 9200 19.8 16.4 121 25.7 18.0 143 Fisher Creek 9100 19.1 20.6 93 24.1 20.9 115 Northeast Entrance 7350 6.9 6.4 108 12.2 8.3 147 Parker Peak 9400 17.1 13.0 132 19.6 11.4 172 Sylvan Lake 8420 13.3 13.0 102 23.9 15.0 159 Thumb Divide 7980 10.6 9.6 110 15.9 12.2 130 Two Ocean Plateau 9240 24.1 17.6 137 24.3 17.4 140 White Mill 8700 15.9 14.6 109 18.8 15.5 121 Wolverine 7650 -M 7.1 * -M 8.2 * ----- ----- Basin Index (%) 114 132 WIND RIVER Burroughs Creek 8750 12.3 -M * 15.2 -M * Castle Creek 8400 7.0 -M * 9.2 -M * Cold Springs 9630 6.5 4.5 144 9.1 6.2 147 Deer Park 9700 17.9 9.4 190 21.5 12.3 175 Hobbs Park 10100 12.5 8.0 156 12.5 7.8 160 Kirwin 9550 10.0 5.9 169 13.1 7.2 182 Little Warm 9370 6.9 6.4 108 11.9 8.2 145 Owl Creek 8975 4.0 3.1 129 5.6 3.6 156 South Pass 9040 17.1 8.9 192 16.5 11.0 150 St. Lawrence Alt 8620 3.7 4.2 88 7.7 5.3 145 Togwotee Pass 9580 18.5 15.0 123 22.3 15.9 140 Townsend Creek 8700 7.0 5.2 135 10.0 7.1 141 ----- ----- Basin Index (%) 147 154 BIGHORN BASIN Bald Mtn. 9380 12.8 10.8 119 11.5 10.7 107 Bear Trap Meadow 8200 3.3 3.4 97 4.8 5.2 92 Bone Springs Div 9350 10.1 9.8 103 10.2 9.6 106 Grave Springs 8550 3.8 4.9 78 4.8 6.4 75 Kirwin 9550 10.0 5.9 169 13.1 7.2 182 Marquette 8760 4.8 -M * 8.2 -M * Middle Powder 7760 4.6 6.3 73 5.0 7.4 68 Owl Creek 8975 4.0 3.1 129 5.6 3.6 156 Powder River Pass 9480 4.0 6.5 62 6.8 7.9 86 Shell Creek 9580 10.5 9.1 115 8.2 9.0 91 Timber Creek 7950 3.6 2.9 124 5.0 4.5 111 ----- ----- Basin Index (%) 106 105 SHOSHONE RIVER Blackwater 9780 20.1 14.8 136 23.8 13.3 179 Evening Star 9200 19.8 16.4 121 25.7 18.0 143 Marquette 8760 4.8 -M * 8.2 -M * Sylvan Road 7120 9.6 7.8 123 19.8 11.9 166 Younts Peak 8350 12.9 9.6 134 17.0 10.5 162 ----- ----- Basin Index (%) 128 161 POWDER RIVER Bear Trap Meadow 8200 3.3 3.4 97 4.8 5.2 92 Cloud Peak Reservoir 9860 7.6 8.3 92 9.4 7.9 119 Grave Springs 8550 3.8 4.9 78 4.8 6.4 75 Hansen Sawmill 8360 5.1 4.0 128 6.9 5.1 135 Middle Powder 7760 4.6 6.3 73 5.0 7.4 68 Powder River Pass 9480 4.0 6.5 62 6.8 7.9 86 Soldier Park 8720 7.6 -M * 6.9 -M * ----- ----- Basin Index (%) 85 94 TONGUE RIVER Big Goose 7990 5.5 4.9 112 6.5 6.5 100 Bone Springs Div 9350 10.1 9.8 103 10.2 9.6 106 Burgess Junction 7880 6.0 6.6 91 7.3 7.5 97 Dome Lake 8880 6.7 6.8 99 8.2 8.4 98 Little Goose 8870 6.0 -M * 8.1 -M * Sucker Creek 8880 6.9 7.1 97 7.0 8.7 80 Tie Creek 6870 4.0 3.4 118 7.2 7.1 101 ----- ----- Basin Index (%) 102 97 BELLE FOURCHE Cole Canyon 5910 3.5 3.2 109 4.4 5.6 79 ----- ----- Basin Index (%) 109 79 CHEYENNE RIVER BASIN Blind Park 6890 4.4 4.6 96 5.5 7.7 71 North Rapid Creek 6130 4.5 4.3 105 4.8 6.2 77 ----- ----- Basin Index (%) 100 74 UPPER N. PLATTE Arapaho Ridge 10960 18.8 13.2 142 19.6 14.1 139 Blackhall Mtn 9820 25.3 -M * 26.8 -M * Columbine 9160 19.0 14.7 129 21.2 16.4 129 Divide Peak 8880 13.4 12.3 109 16.0 13.6 118 Joe Wright 10120 14.8 13.0 114 20.6 16.0 129 Laprele Creek 8375 7.2 5.4 133 7.0 7.5 93 Med Bow 10500 26.4 -M * 25.0 -M * North French Creek 10130 16.9 16.0 106 18.4 16.8 110 Never Summer 10280 16.4 12.6 130 13.9 -M * Old Battle 10000 25.1 19.1 131 26.6 22.4 119 Rawah 9020 10.0 6.2 161 12.7 9.0 141 Sage Creek Basin 7850 11.3 8.4 135 11.7 9.8 119 Sand Lake 10050 19.5 16.5 118 18.8 15.1 125 South Brush Creek 8440 7.3 7.3 100 8.6 9.5 91 Tower 10500 30.4 27.5 111 32.5 25.5 127 Webber Springs 9250 19.9 13.7 145 23.7 17.0 139 Willow Creek Pass 9540 13.2 7.6 174 14.1 8.3 170 Zirkel 9340 27.6 18.5 149 29.8 19.0 157 ----- ----- Basin Index (%) 128 128 SWEETWATER Deer Park 9700 17.9 9.4 190 21.5 12.3 175 Larsen Creek 9000 12.3 7.3 168 15.6 -M * South Pass 9040 17.1 8.9 192 16.5 11.0 150 ----- ----- Basin Index (%) 185 163 LOWER N. PLATTE Casper Mtn. 7900 6.7 7.5 89 6.9 9.0 77 Laprele Creek 8375 7.2 5.4 133 7.0 7.5 93 Reno Hill 8400 7.5 7.7 97 7.9 8.9 89 Windy Peak 7900 5.8 4.2 138 6.5 6.4 102 ----- ----- Basin Index (%) 110 89 LARAMIE RIVER Brooklyn Lake 10240 16.3 12.0 136 15.1 12.9 117 Cinnabar Park 9574 13.3 13.2 101 16.0 15.8 101 Crow Creek 8330 4.0 5.7 70 6.0 6.4 94 Deadman Hill 10220 14.2 10.1 141 14.0 10.2 137 Rawah 9020 10.0 6.2 161 12.7 9.0 141 Roach 9700 12.4 10.0 124 14.7 11.8 125 ----- ----- Basin Index (%) 123 119 S. PLATTE Black Mountain 8920 7.2 -M * 8.4 -M * Crow Creek 8330 4.0 5.7 70 6.0 6.4 94 Deadman Hill 10220 14.2 10.1 141 14.0 10.2 137 ----- ----- Basin Index (%) 115 120 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 7.1 123 -M 9.6 * Divide Peak 8880 13.4 12.3 109 16.0 13.6 118 Elk River 8700 15.7 11.2 140 15.7 12.8 123 Little Snake River 8915 22.8 15.5 147 28.5 20.6 138 Old Battle 10000 25.1 19.1 131 26.6 22.4 119 Sage Creek Basin 7850 11.3 8.4 135 11.7 9.8 119 Sandstone RS 8150 10.6 8.0 132 11.9 12.0 99 Whiskey Park 8950 20.0 16.0 125 22.4 17.9 125 ----- ----- Basin Index (%) 131 122 UPPER GREEN RIVER Big Sandy Opening 9080 13.4 8.2 163 15.7 8.4 187 Blind Bull Sum 8650 22.6 13.8 164 -M 12.9 * East Rim Divide 7930 11.2 6.8 165 13.4 7.7 174 Elkhart Park G.S. 9400 10.1 7.5 135 15.4 8.5 181 Gros Ventre Summit 8750 9.7 8.4 115 14.1 8.3 170 Gunsight Pass 9820 10.5 8.3 127 14.5 8.9 163 Kendall R.S. 7740 12.7 7.8 163 17.0 9.3 183 Loomis Park 8240 15.4 9.5 162 20.3 11.3 180 New Fork Lake 8340 10.1 6.8 149 10.6 7.1 149 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.4 7.5 165 17.1 9.2 186 Spring Creek Divide 9000 20.7 14.4 144 23.2 15.4 151 Triple Peak 8500 22.2 13.3 167 -M 16.1 * ----- ----- Basin Index (%) 152 171 LOWER GREEN RIVER Blacks Fork Jct 8870 8.4 -M * 10.4 -M * Buck Pasture 9700 14.0 -M * 16.4 -M * EF Blacks Fork GS 9360 9.2 -M * 9.6 -M * Hams Fork 7840 11.4 7.1 161 13.4 7.3 184 Hewinta 9519 8.8 5.7 154 11.1 8.6 129 Hickerson Park 9145 6.1 3.8 161 6.4 6.1 105 Hole-in-Rock 9150 5.1 4.0 128 6.9 5.7 121 Indian Creek 9425 21.6 14.6 148 16.5 14.0 118 Kelley R.S. 8180 15.4 9.0 171 20.6 11.6 178 Spirit Lk 10235 9.8 -M * 11.5 -M * Steel Creek Park 10200 12.0 8.7 138 13.5 9.9 136 ----- ----- Basin Index (%) 152 140 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.8 -M * Bug Lake 7950 21.5 10.7 201 -M 12.4 * Burts Miller Ranch 8000 5.6 -M * 6.1 -M * Chalk Creek #1 8993 21.9 13.4 163 23.4 15.7 149 Hayden Fork 9212 15.6 8.6 181 20.4 13.1 156 Kelley R.S. 8180 15.4 9.0 171 20.6 11.6 178 Lily Lake 9156 10.7 7.4 145 13.1 10.7 122 Monte Cristo 8960 22.0 16.0 138 -M 16.3 * Salt River Summit 7760 12.5 7.8 160 17.9 10.7 167 ----- ----- Basin Index (%) 164 154 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.